Senior Identity Engineer · AI orchestrator · ½ machine
I build systems that solve real problems
Secure, scalable software across identity, crypto, IoT and the web — sometimes the engineer, sometimes the founder.
Start a project About me →RoleSenior Identity Engineer @ TWIN (IOTA Foundation)
StackTypeScript · Rust · Move · Solidity
FocusOID4VP · SD-JWT VC · W3C VC · KERI/vLEI
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What I build
SaaS · hosted
GPTMusePrivacy-first AI platform with access to ChatGPT, Claude, Gemini, Grok and others. Pay-per-use pricing.gpt-muse.com →
FormshiveEmbed and process forms from your website; Pay as you go or self-host from €590/year.formshive.com →
CheckoutbayE-Commerce platform for SMEs and individuals; Pay as you go or self-host from €790/year.checkoutbay.com →
Self-hosted · open source
StackpitSelf-hosted, Sentry-compatible error tracking. Single binary, single SQLite file, no external dependencies. MIT./software/stackpit →
ForsetiSelf-service UI & OAuth2 login / consent bridge for Ory Kratos + Hydra. Server-rendered in Rust. AGPL-3.0./software/forseti →
Desktop apps & libraries
guix-rsDesktop GUI for GNU Guix — search, install, upgrade and reconfigure, no terminal. Built in Rust on Iced; ships the libguix crate. GPL-3.0./software/guix-rs →
iced_webviewEmbed web views in iced apps — pick a rendering engine (litehtml, Blitz, Servo or CEF), drop a widget in your view. A Rust library. Apache-2.0./software/iced-webview →
See allEvery app, library, CLI and tool I've shipped — including the smaller Rust crates that don't get a page of their own./software · 19 projects →
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Latest writing
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14 May 2026
Keycloak Multi-Tenancy: Realms vs Organizations
#keycloak -
23 Apr 2026
ISO 27001, ISO 42001, and What 'Aligned' Actually Means
#iso27001 -
21 Apr 2026
A Tiny Guix Build Farm on a ThinkPad
#guix -
05 Mar 2026
OpenPGP Web Key Directory on S3 and CloudFront
#gpg -
04 Mar 2026
Screen Sharing on Niri/Wayland with Guix
#guix
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Around the world
Where I've worked
Born in East Germany; at home between Europe, the Middle East and Southeast Asia. The pins are projects and places.
↳ live map · glowing pins04